Pith Number

pith:75V5HVCD

pith:2010:75V5HVCDNKQRWQT5Q3VB52RP7P

not attested not anchored not stored refs pending

Quaternionic Kaehler and Spin(7) metrics arising from quaternionic contact Einstein structures

Dimiter Vassilev, Jos\'e A. Santisteban, Luis C. de Andr\'es, Luis Ugate, Marisa Fern\'andez, Stefan Ivanov

arxiv:1009.2745 v1 · 2010-09-14 · math.DG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{75V5HVCDNKQRWQT5Q3VB52RP7P}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T04:40:56.432223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff6bd3d4436aa11b427d86ea1eea2ffbc1881918e738f559799f1bddc6b5c18d

Aliases

arxiv: 1009.2745 · arxiv_version: 1009.2745v1 · doi: 10.48550/arxiv.1009.2745 · pith_short_12: 75V5HVCDNKQR · pith_short_16: 75V5HVCDNKQRWQT5 · pith_short_8: 75V5HVCD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/75V5HVCDNKQRWQT5Q3VB52RP7P \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ff6bd3d4436aa11b427d86ea1eea2ffbc1881918e738f559799f1bddc6b5c18d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0da2237aaaeeb3391b1ad669257717ff6756fef5975d7fa9ce6f53153780e424",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2010-09-14T19:49:07Z",
    "title_canon_sha256": "7cbea117a797e903b98b590f729cefbcf52047e36b9ba075560243bc809e2261"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.2745",
    "kind": "arxiv",
    "version": 1
  }
}